Ever since the stock market correction began on September 22, the solar panel sector has been struggling. It was not until this week when solar stocks finally made some progress toward returning to their respective, 50-day moving averages. On Friday, SolarCity (NASDAQ:SCTY) closed above its 50-day moving average for the first time since September 12, after jumping 2.65 percent to $55.05. The Guggenheim Solar...